Some of the best three-year-old fillies in the country will be on trial for a start in next month’s Group 1 Thousand Guineas at Caulfield on Saturday when they line up in the Group 3 2012 Thousand Guineas Prelude(1400m).

Commanding Jewel faces a step up in class in Saturday's Thousand Guineas Prelude

Ballarat-based horseman Robert Smerdon is looking down the barrel of a second successive Crown Oaks success after his improving Shamardal filly Bloomingdale Miss won her latest assignment at Caulfield Racecourse over the weekend.

Robert Smerdon could vie for successive Crown Oaks this year following the success of Mosheen (pictured) in 2011